PRODUÇÃO E QUALIDADE PÓS-COLHEITA DO MARACUJAZEIRO-AZEDO IRRIGADO COM ÁGUAS SALINAS E APLICAÇÃO EXÓGENA DE H2O2

Abstract

Brazilian northeast is characterized by limited water unavailability, both in quantitative and qualitative terms. Therefore, high salt waters are applied in order to assure food production in the region. Thus, some strategies need to be adopted to mitigate salt effect on grown plants. In this context, this study aimed to evaluate yield and post-harvest quality of sour passion fruit ‘BRS Rubi do Cerrado’ under saline waters and H₂O₂ application on leaves. The experiment was carried out using drainage lysimeters under greenhouse conditions in the municipality of Campina Grande (state of Paraiba in Brazil). The design was completely randomized in split-plot plots, with water salinity levels EC_w (0.6, 1.2, 1.8, 2.4, and 3.0 dS m-1) considered the plots and the concentrations of H₂O₂ (0, 15, 30, and 45 μM) considered the subplots, with three replicates. Exogenous application of H₂O₂ at 30 µM mitigated adverse effects of salt on the number of fruits and shell thickness of sour passion fruit. Exogenous application of H₂O₂ on sour passion fruit production mitigates negative effects caused by saline water on polar diameter, slurry yield and weight.